RT9288A

RT9288A PWM Step-Up DC/DC Controller for White-LED Driver General Description The RT9288A is a wide input operating voltage range stepup controller. High voltage output and large output current are feasible by using an external N-MOSFET. The RT9288A input operating range is from 3V to 13.5V. Besides, it could support up to 60V output at 12V input. The RT9288A is an optimized design for WLED driver applications. Adjusting the output current of the RT9288A changes the brightness of the WLEDs. Chip Enable pin can be used as a digital input allowing WLED brightness control with a logic-level PWM signal. Ordering Information RT9288A Package Type E : SOT-23-6 Note : Lead Plating System P : Pb Free G : Green (Halogen Free and Pb Free) Richtek products are : ` RoHS compliant and compatible with the current require- ments of IPC/JEDEC J-STD-020. ` Suitable for use in SnPb or Pb-free soldering processes. Features z VIN Operating Range : 3V to 13.5V z Fixed PWM Frequency : 1MHz z 200Hz to 200kHz PWM Dimming Frequency z Flexible PWM/Analog Dimming Control z Voltage Mode with External Compensation z Soft Start Function z RoHS Compliant and 100% Lead (Pb)-Free Applications z TFT LCD Panels z LED Backlighting Pin Configurations (TOP VIEW) EXT GND COMP 654 23 VDD EN FB SOT-23-6 Marking Information For marking information, contact our sales representative directly or through a Richtek distributor located in your area. Functional Pin Description Pin No. Pin Name Pin Function 1...